Solve every everyday percentage problem in seconds. Our free percentage calculator handles the three questions everyone asks: what is X% of Y, X is what percent of Y, and what is the percentage change between two numbers. Perfect for discounts, tips, grades, commissions, and growth rates.
Covers the everyday percentage problems: discounts, marks, tips, growth rates and exam scores.
From sale prices to exam scores to investment returns, percentages run daily life โ and mental math under pressure leads to embarrassing mistakes at the checkout or in the meeting room. Our tool gives instant, exact answers for all three classic percentage problems, including whether a change is an increase or a decrease, so you always know the real number before you decide.
Use 'X% of Y': 20% of $1,500 is $300, so the sale price is $1,200. The first box on this page does it instantly.
(New โ Old) รท Old ร 100. A positive result is an increase and a negative one a decrease โ for example, going from 100 to 150 is a 50% increase.
Divide what you paid by (1 โ discount rate): paid $800 after 20% off โ $800 รท 0.8 = $1,000 original price.
Going from 10% to 15% is a 5-percentage-point rise but a 50% relative increase. Our change calculator gives you the relative figure, which is what most people mean.